The A1 building has sixteen floors, and the highest five floors all belonged to the mystery seller.
After she moved in, because this place was closer to her company, Ji Nuan did not have to leave early every day to avoid traffic. She had forty-five minutes every day for her morning run and exercise. On the first day, she met a neighbor during her run. After a brief chat, her neighbor found out she had moved to the top floor and immediately gave her a warm greeting. She also fired various questions at Ji Nuan.